#!/bin/bash

read -p "输入数据：" system

if [ $system == Linux -o $system == linux ];then
    echo '红帽'
elif [ $system == windows -o $system == Windows ];then
    echo '微软'
elif [ $system == macos -o $system == Macos ];then
    echo '苹果'
else
    echo '其它'
fi
